Researchers have found a flaw that could lead to denial of service attacks on content distribution networks around the world. The attack, called CPDoS, works by fooling the CDN into caching an error page. Amazons CDN CloudFront was by far the worst affected but it has now fixed the vulnerability, according to the researchers website. An attacker can tamper with these headers in three different ways to make them confuse the web server and send them to the origin server.”]